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Natural Gas, the Engines Can Be Operated Using a Broad Spectrum of Different Gases

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Natural Gas, the Engines Can Be Operated Using a Broad Spectrum of Different Gases Type 6 efficient durable reliable For more than 40 years we have specialised in developing and producing gas engines for an optimised power and heat generation. Drawing on our vast experience, we are able to supply our customers with fully developed products to cover their specific needs. Our high-tech engines in the 0.3 – 3 Megawatt range are designed for stationary non-intermittent operation and are characterised by extremely high degrees of efficiency, low exhaust gas emissions, durability and a high level of reliability. Besides natural gas, the engines can be operated using a broad spectrum of different gases. This offers customers all over the world the best guarantee for an efficient and safe energy supply. Our wide scope of supply ranges from gensets to complete cogeneration systems, including extensive maintenance and service packages. efficient 3 The engine speed of 1,500 rpm results in a high capacity rate and, therefore, low installation costs. The pre-combustion chamber concept enables you to achieve both maximum efficiency and the lowest emission rates at the same time durable 4 For this type in the 1.7 MW to 3 MW power ran- ge, the perfected design concepts and optimised components guarantee a service life of 60,000 operating hours before the first major over- haul reliable Continuous and dedicated refining 5 based on extensive experience has resulted in a reliable and state-of- the-art product 2 1 2 Type Technical Features 1 Four-valve cylinder head The cylinder • little charge changing work • efficient and stable combustion head, equipped with two intake and two exhaust valves and a centrally located scavenged pre-combustion chamber, was developed using state-of-the-art calculation and simulation methods (CFD). Crossflow cylinder head Crossflow through individual • separation of cold mixture side and hot exhaust gas side cylinder heads based on our gas engine concept (mixture sup- • long cylinder head service life of up to 30,000 operating hours ply in combustion chamber and external exhaust gas manifold). • exhaust gas manifold easily accessible 2 Gas mixer The gas mixer we have developed • optimised geometry and short floating times • low pressure functions according to the equal-pressure principle and has been losses and therefore high degree of efficiency at full load • strict optimised over the years to meet the requirements of modern adherence to NOx emission values • trouble-free operation with gas engines. alternative gas types (2-gas operation) • high degree of mixing efficiency • reliable starting behaviour 3 Special gas mixer Specific version for special gases with low calorific values. 4 Turbocharger bypass An electronically • high dynamism in the output control over the entire control controlled valve installed behind the compressor enables an range • high degree of control over the system when in isolated efficient mixture return and supports the output control operation, increased reserve regarding load adding and shedding through the throttle valve. • optimal adaptation to varying ambient conditions (intake temperature, altitude) 5 Dry exhaust gas manifold The uncooled • high specific output • increased electrical efficiency • in- exhaust gas manifold enables a maximum energy supply to the creased usable energy content in exhaust gas exhaust gas turbocharger. • Intake pressure charging Fuel gas and • except for the pre-combustion gas supply, a low gas pres- combustion air are mixed before entering the turbocharger. sure is sufficient • homogenising of the mixture in the turbo- charger • Heat recovery The oil heat exchanger can be • maximum thermal efficiency, even at high and fluctuating specified as a two-stage plate heat exchanger. return temperatures • Combustion The optimised combustion is the basis • maximum degree of efficiency and environmental compatibility for a high engine efficiency at the lowest emission rates and therefore one of the core areas of Jenbacher’s R&D activities. • Scraper ring The scraper ring integrated in the • stabilised oil consumption • reduced risk of piston seizing cylinder liner prevents carbon deposit on the piston crown. • reduced wear • perfect partial load behaviour • Pre-combustion chamber The ignition • highest efficiency • lowest NOx emission values • reliable energy of the spark plug is amplified in the scavenged pre-com- combustion bustion chamber.This will speed-up and stabilise combustion. 3 Technical Data Configuration V 60° Bore (mm) 190 Stroke (mm) 220 Displacement/cylinder (lit) 6.24 Speed (rpm) 1,500 (50 Hz); 1,500 with gearbox (60 Hz) Mean piston speed (m/s) 11 (1,500 rpm) Scope of supply Genset, Cogeneration system Applicable gas types Natural gas, flare gas, biogas, landfill gas, sewage gas Special gases as coal mine gas, coke gas, wood gas, pyrolysis gas, … Engine type J 612 GS J 616 GS J 620 GS No. of cylinders 12 16 20 Total displacement (lit) 74.9 99.8 124.8 Dimensions (l x w x h in mm) 1 Genset 7,200x2,500x2,800 8,300x2,500x2,800 8,900x2,500x2,800 Cogeneration system 7,200x2,500x2,800 8,300x2,500x2,800 8,900x2,500x2,800 Weights empty (kg) 1 Genset 18,600 23,600 27,700 Cogeneration system 19,100 24,100 28,300 1 Dimensions and weights are valid for 50 Hz applications. Scope of supply Our scope of supply comprises as engine cooling water, oil, mixture and exhaust gas can be both gensets for electrical power generation and cogeneration incorporated, resulting in an increased level of efficiency for systems for the optimised heat and electrical power generation. the customer.Before being shipped to our customers, all modu- Depending on customer specifications, various heat sources such les are performance and load tested at our factory in Jenbach. Applicable gas types Increased ecological only alleviate the pressure on the environment and encourage consciousness and the need to cut down on pollutants have lead caretaking use of natural resources but also ensures the to an increased use of alternative energy sources. Along with efficiency of a plant.The continuous refinement of our engines natural gas operation, our technology makes it possible to and our focus on special gas applications enable the use of dispose environmentally offensive gases (e.g. from landfill a broad spectrum of gases with different calorific values sites, agriculture, mining and the chemicals industry) and (see table 1). simultaneously use these for power generation.This helps not Gases from chemical industry chemical Gases from gas Wood gas Pyrolysis gas Coal mine gas Coke gas Landfill Biogas Sewage gas gas Natural Flare gas City gas Propane Butane Calorific value (in kWh/Nm3) table 1 0 Logarithmic presentation 5 10 15 20 30 4 Type Outputs and Efficiencies Natural gas 1,500 rpm | 50 Hz 1,500 rpm | 60 Hz NOx < Type Pel (kW) el (%) Pth (kW) th (%) tot (%) Pel (kW) el (%) Pth (kW) th (%) tot (%) 1 2 1 2 612 1,644 42.4 1,730 44.6 87.0 1,622 41.8 1,750 45.1 86.9 500 mg/Nm3 616 2,188 41.9 2,350 45.0 86.9 2,159 41.4 2,374 45.5 86.9 620 2,740 42.5 2,903 45.0 87.5 2,697 41.8 2,945 45.7 87.5 612 1,644 41.8 1,762 44.8 86.6 1,622 41.2 1,782 45.3 86.5 250 mg/Nm3 616 2,188 42.1 2,301 44.3 86.4 2,159 41.5 2,325 44.7 86.2 620 3,047 42.6 3,173 44.4 87.0 2,994 41.9 3,215 45.0 86.9 Biogas 1,500 rpm | 50 Hz 1,500 rpm | 60 Hz Pel (kW) el (%) Pth (kW) th (%) tot (%) Pel (kW) el (%) Pth (kW) th (%) tot (%) NOx < Type 1 2 1 2 612 1,458 39.8 1,531 41.8 81.6 1,435 39.2 1,554 42.4 81.6 500 mg/Nm3 616 1,944 39.8 2,041 41.8 81.6 1,908 39.1 2,065 42.3 81.4 620 2,428 39.8 2,552 41.8 81.6 2,398 39.3 2,594 42.5 81.8 612 1,458 39.2 1,591 42.7 81.9 1,435 38.5 1,614 43.4 81.9 250 mg/Nm3 616 1,944 39.2 2,121 42.7 81.9 1,908 38.4 2,145 43.2 81.6 620 2,428 39.1 2,651 42.7 81.8 2,398 38.6 2,693 43.4 82.0 1 electrical output based on ISO standard output and standard reference conditions according to ISO 3046/I-1991 and p.f. = 1.0 according to VDE 0530 REM with respective tolerance; minimum methane number 70 for natural gas 2 total heat output with a tolerance of +/- 8 %, exhaust gas outlet temperature 120°C, for biogas exhaust gas outlet temperature 180°C All data according to full load and subject to technical development and modification. 5 1 DIA.NE® – Dialog Network ® DIA.NE Jenbacher’s engine and module management Features of our DIA.NE® module control system: system consists of a visualisation unit based on an industrial • control of all systems relevant to the module (closed-loop PC, a central processor for the engine control system and the Leanox, speed, output, knocking and isolated operation control module control system. DIA.NE is connected to the central system, ignition system) • 8 additional controllers available control system according to customer specifications. • clear visualisation of the systems and display of all relevant data • graphical online trends and alarm management DIA.NE® is unique because it combines powerful and flexible control electronics on the one hand and a user-friendly operation Using the following additional components, DIA.NE® can be concept on the other.The visualisation unit with colour VDU customised to individual needs: provides a clear and understandable overview of all infor- • DIA.NE® RMC – Dialog Network for Remote Message Control mation and measured values and is extremely user-friendly.
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